63412121 has 2 divisors, whose sum is σ = 63412122. Its totient is φ = 63412120.

The previous prime is 63412099. The next prime is 63412147. The reversal of 63412121 is 12121436.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63027721 + 384400 = 7939^2 + 620^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63412121 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 63412093 and 63412102.

It is not a weakly prime, because it can be changed into another prime (63412021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31706060 + 31706061.

It is an arithmetic number, because the mean of its divisors is an integer number (31706061).

Almost surely, 2^63412121 is an apocalyptic number.

It is an amenable number.

63412121 is a deficient number, since it is larger than the sum of its proper divisors (1).

63412121 is an equidigital number, since it uses as much as digits as its factorization.

63412121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 288, while the sum is 20.

The square root of 63412121 is about 7963.1727973214. The cubic root of 63412121 is about 398.7714828099.

Adding to 63412121 its reverse (12121436), we get a palindrome (75533557).

The spelling of 63412121 in words is "sixty-three million, four hundred twelve thousand, one hundred twenty-one".